Attachment for type-writers



(No Model.) 2 Sheets-Sheet? 1.

W. S. HOMME. ATTACHMENT EOE TYPE WEITERE.

No. 441,705. Patented' Deo. z, 1890.

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S. ROMME. ATTACHMENT TOR TYPE WRITERS.

Patented Dee. 2, 1890.

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`WILLIAM S. ROMME, OF BROOKLYN, NEV YORK, ASSIGNOR TO ADELAIDE II. TYOODALL, OF EOKINGTON, DISTRICT OF COLUMBIA.

ATTACHMENT FOR TYPE-WRITERS.

SPECIFICATION forming part of Letters Patent No. 441,705, dated December 2, 1890.

` Application tiled I """j' 13, 1890. Serial No. 336,743. (No model.)

To all whom iv 71mg/ concern:

Be it known that l, WILLIAM S. ROMME, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Attachments for TypelVriters; and I do declare the following to be a'full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to certain new and useful improvements in type writing machines, and more particularly to automaticv reverse-movement attachments to such machines. It is designed more especially as an improvement upon the attachment for which Letters Patent No. 418,260 were granted to Adelaide H. lVoodall and myself jointly December 3l, 1889. The foundation principle of the normally-inactive spring of greater power than that which advances the rack-bar and acting in opposition thereto is retained, the novelty in the present instance residing solely in certain new and novel arrangements of parts, whereby better results are obtained and the device simplified in its construction. I provide a power-equalizer which I have found from experience to be desirable, although not absolutely necessary, and have changed the construction of the compound lever. These are the essential points of difference between the old device and that presented in this application. Other minor changes, however, have been made, which will be made apparent in the following description.

The invention in the present instance residing solely in the features substantially as above outlined, I have not shown in the drawings any more of the old construction nor of a type-writer than is necessary to a proper understanding of the present invention, it being understood that the principle and mode of operation is the same as in the prior patent, to which reference may be made, if necessary, to enable one to better understand the same.

Although not shown, I propose to use, when desired, the automatic paper-feeding device shown in the prior patent. Its operation Will be the same in connection with the present improvements as in the old form, the carriage returning in the same Way and the lever coming in contact with the inclined arm as before.

The invention is clearly illustrated in the accompanying drawings, wl1ch',\vith the letters of reference marked thereon, form a part of this specification, and in which- Figure l is a perspective view of a portion of a type-Writer of the Remington type provided with my improvements. Fig. 2 is an edge view of the attachment. Fig. is an enlarged front elevation of the attachment partly broken away and with the cap or cover removed. Fig.' 4 is a sectionv on the line n: of Fig. 3. Fig. 5 is a face view ofthe toothed wheel and its paWl removed. Fig. 6 is aface view of the disk.

Like letters of reference indicate like parts throughout the several views.

Referring now to the details of the drawings by letter, A designates a portion of the supporting-frame of an ordinary Remington type-writer, provided with the ledge d.

B is the rack-bar of the carriage, and C my auxiliary rack-bar, Which may be connected with the rack-bar of the carriage in any suitable manner, so as to move therewith.

B is a standard designed to support the operating parts of the attachment and adapted to rest upon the ledge d of the type-Writer frame, to which it maybe secured in any Wellknown way-such, for instance, as by setscrews. This standard is chambered, as shown in Fig. 4, to provide a receptacle for and serve as a protection for the operating parts. Near its upper end this standard is provided with a passage-way b for the auxiliary rack-bar, as shown best in Fig. 3,and within the charnber of the said standard there are provided anti-friction rollers c, carried by a suitable support, and against which the upper edge of the auxilary rack-bar rides, as shown in said Fig. 3. The standard is formed with lugs c',

apertured to receive the screws or other means which serve to retain in position a detachable cap B2, as shown in Fig. 4. v Journaled in suitable bearings in this cap and in the rear IOO side of the standard is the horizontal shaft D, carrying at its rear end a gear-wheel D', provided with a hub or boss d, through which passes .a set-screw d into the shaft to hold it in position thereon. Fast on this shaft within the chamber of the standard is the disk E, provided with a segmental slot e, through which projects to the rear a pin or lugf, projecting from the toothed portion of the bent io lever F', said toothed portion being in the form of a segment, as shown in Figs. 3 and (S, being pivotedto the front face et the disk at e and provided at its pivot with an enlargement or detent e2, which is preferably, though i5 not necessarily, provided wit li an anti-friction roller. The standard near the pivot ot' this lever is provided with an openingj", against the lower wall of which opening the said detent of the bent lever bears. At this point I 2O preferably provide an anti-friction rollerj'2, as shown in Fig. 3. On the opposite face ot this disk is a spring f, which bears on the projecting lug of the lever, as shown best in Fig. G, and serves to at all times keep the said lug at the extreme outer end of its slot, as shown in said iigure. The outer tace of this disk is provided with a stop q, which serves to limit the movement of the arm II, and a spring g', which bears on the segmental poro tion ot' the lever and serves to cushion the same.

There in this description and in the claims I refer to the disk E and the toothed wheel L and speak of the inner face, I mean the face 3 5 on the side next the machine.

Upon the inner face of the disk is a stop or lug 2, which is adapted to ride under the free end ot' a stout spring G', which is arranged, as shown in Fig. 3, upon a suitable pin or sup 4o port within the chamber of the standard,and this pin and the spring serve to cushion the return of the disk to its normal position.

Loose on the shaft D is a geared huh G2, adapted to mesh with the toothed portion of the compound lever, as shown in Fig. 3, and

fast on this hub and moving therewith is an y arm H, a collar or other like means 7L being provided to retain the toothed portion of the i lever in mesh with the geared hub.

for its ready removal when necessary.

.A CO1- l 5o lar 7i', detachably secured to the shaft, prei vents displacement of the hub and provides l I is a toothed wheel loosely sleeved on the l shaft D inside the disk and formed with an 5 5 aperture t', through which works the beveled 3: pawl I', hinged, as at t', to a suitable support i2 on the outer face of the wheel and provided with a lateral larm 12, against which bears a spring Ito keep it normally projected through 6o the opening in the wheel.

The cap or cover outer periphery ot' which is grooved or otherwise formed so as to hold a cord or other like device and prevent its overlapping in winding. Loose on ihis shaft is a gear-wheel K2, designed to mesh with the gear-wheel D on the end ot' the shaft D, as shown in Fig. l. On the face ot' this gear-wheel K2 is a pawl 7c, held in engagement with the ratchet by means ot' a spring k', as shown best in Fig. l. This allows the ratchet to revolve independent ot' th 3 gear-wheel in winding, but causes the two to revolve in the unwinding ot the spring M.

L is a shai't suitably journaled in bearings in the standard, and tast on this shaft, within the drum L', is a stift' coiled or spiral spring M, attached at one end to the shaft and at the other to the drinn, so that as the drum is revolved the spring will be wound up, and as it revolves in the opposite direction the spring will be unwound.

N is a cord, chain, or other analogous device attached at one end to the drum and at the other end to the cone, so that as it is unwound from one it will be wound up on the other.

The parts thus constructed and arranged are designed to operate as follows: The spring is wound up by turning the winding-shaft. This does not actuate the gear-wheel D or the mechanism within the chamber ot the standard. \Vith the parts wound up and the auxiliary rack-bar attached to the carriage the letter-keys of the type-writer are operated upon in the usual manner, and the carriage travels from right to left, being propelled forward by the usual spring. The auxiliary rackbar nieves with the carriage and works in the teeth of the wheel I. The rotation of this wheel by reason ot' this engagement causes the pawl I to be withdrawn from the opening in the cap B2 and depresses it, so that in the further rotation of said wheel the pawl will engage with the arm H, and as the wheel is still further revolved in the direction of the arrow in Fig. 3 the said arm is carried around with the wheel, by reason of the engagement ot the pawl therewith, until the detente2 is drawn in, so as to release the same from its bearing on the easing or standard, and as soon as said detent is released from its bearing the spring M, being connected through the gearwheels and cord and cone and drum with the shaft on which the disk E is fixed, causes said disk to revolve until it is again stopped by the engagement of the detent with its bearing` on the standard.

The gearing up of the compound lever gives me greater leverage and requires less power to operate the parts. Besides it serves as a sort of cushion in returning the parts and, avoids any jar ot the machine.

ICC

The power-equalizer, the cord, drum, and

cone act on the Well-known fusee principle andhave proved most efficient, enabling me to adjust the tension of the spring when fully Wound up and give me the saine power till it has completely run down.

The spring M should be stronger and more powerful than the spring which actuates the carriage from right to left, in order that it may be sure to cause the carriage to return to the right when the parts have assumed the position at the end of the line, as above described. This spring M, it will of course be understood, is normally inactive, the same as in the prior patent.

IVhat I claim as new is-` 1. The combination, with the rack-bar and its advancing mechanism, of the spring independent of the advancing mechanism for returning the rack-bar and a power-equalizer for said spring, as set forth.

2. The combination, With the carriage and its advancing mechanism, of a rack-bar carried by the carriage'and independent of the advancing mechanism, a spring of greater power than that which advances the rack-bar and acting in opposition thereto, a holder for said spring, which, when actuated to release the spring` actuates the rack-bar to return the carriage to its normal position, and a powerregulator for said spring, substantially as specified.

3. The combination, with the disk E, having curved slot, of the bent lever having a lug Working in said slot, and a spring on the disk acting on the said lng, substantially as and for the purpose specified.

4. The combination,with the disk having a curved slot and the bent lever having a segmental portion toothed and having a lug Working in said slot, of the geared hub G2 and its shaft and a spring on the disk acting on the lug of the lever, as set forth.

5. The combination, With the shaft D, the geared hub G2, loose thereon, and means for actuating said shaft, of the bent lever, the disk-E, to which it is pivoted, having a curved slot, the said lever having a segmental toothed portion engaging the geared hub, and a spring g', acting on said segmental portion, substantially as and for the purpose specified.

6. The combination, with the shaft D, the disk E, the geared hub G2 on the shaft, and the bent lever having a toothed segmental portion engaging the geared hub, of the spring acting on a lug projecting from the lever and a cushion for said segmental portion, as shown and described.

7. The combination, with the disk and its actuating devices, of a lug` g2 on the rear face of the disk and a spring G', behind which the said lug rides as the disk returns to its normal position, as and for the purpose specified.

8. The combination, with the toothed Wheel I, having an opening t' for the passage of 1 a pawl, of a pawl I', hinged to a support on the face of the toothed wheel and having a lateral projection I2, and a spring on the toothed Wheel acting on said projection, as set forth.

In testimony whereof I affix my signature in presence of two Witnesses.

TILLIAM S. HOMME. 

